baber/WOPTO huggingface dataset:
Patent GB-428081-A (GB)
Title: Improvements in or relating to wireless receiving systems
IPC: H04B7/08
Filed: 1933-11-07
Abstract: 428,081. Wireless receiving systems. ROBINSON, J., 76, Mill Way, Mill Hill, London. Nov. 7, 1933, No. 30997. [Class 40 (v)] Wanted and unwanted signals which produce a heterodyne interference are received on a plurality of spaced aerials 10-13 feeding highly selective receivers 14, the outputs from which are fed over lines 15 to a central station 16 where after passing phase adjusters 17 they are combined in a common amplifier 18. In this way the phases of the wanted signals are additive and those of the unwanted signals tend to annul each other. The signal accepting means at each aerial may comprise a frequency converter so that the signals fed over the lines 15 are of a common second frequency, which may alternatively be transmitted over wireless links to the central station, and may have one side-band suppressed. The system may be used for isolating the unwanted heterodyne interference for opposing the heterodyne interference present in an independent receiving system. The aerials may be made directional to favour the wanted transmission. Specifications 188,082, [Class 40 (v)], 341,574, and 344,869 are referred to.
Patent GB-671532-A (GB)
Title: The production of compounds of the folic acid series
Filed: 1949-12-02
Abstract: Compounds of the general formula <FORM:0671532/IV (b)/1> wherein R1 represents hydrogen or an alkyl radical and n is zero or a positive integer up to 7 (preferably 0 or 1), are manufactured by reacting a keto acetal of the general formula <FORM:0671532/IV (b)/2> with 2 : 4 : 5-triamino-6-hydroxypyrimidine (or its dihydrochloride), e.g. by refluxing the reactants together in a solvent such as aqueous alcohol (preferably at about pH 4) or by warming them in aqueous or in glacial acetic acid solution. Preferably the alkyl groups contain less than 8 carbon atoms.  The aryl radical of the arylsulphonyl group may carry substituents not reactive under the reaction conditions (e.g. chlorine, bromine or a methoxy, phenoxy or nitro group), whilst, according to a modification of the invention, it may be replaced by an alkyl, cycloalkyl or aralkyl radical (e.g. methyl, ethyl, cyclohexyl or benzyl).  When the starting material is an ester (R1=alkyl), the ester group or groups may be hydrolysed to -COOH before or after the condensation.  Examples describe the preparation of ethyl N-[(2-amino-4-hydroxy-6-pteridyl) -methyl]-N-p1-toluenesulphonyl-p-aminobenzoate from ethyl N-(3 : 3-diethoxy-2-ketopropyl) - N - p1 - toluenesulphonyl - p - aminobenzoate, and of N1-[N - ([2 - amino - 4 - hydroxy - 6 - pteridyl] - methyl) - N - p1-toluenesulphonyl - p - aminobenzoyl] - l - glutamic acid or its diethyl ester from N1-[N-(3 : 3-diethoxy-2-ketopropyl) - N - p1 - toluenesulphonyl - p - aminobenzoyl]-l-glutamic acid or its diethyl ester.  A list of additional starting materials is given.  The products are useful as intermediates for the preparation of compounds of the folic acid series by splitting off the arylsulphonyl group by the action of hydrogen bromide and a bromine acceptor in an aliphatic acid medium, and examples of this step are given.  Keto acetals of the second general formula above are manufactured by oxidation (e.g. with chromic anhydride in glacial acetic acid) of the corresponding hydroxy compounds, which are obtained by reacting an ester of the general formula <FORM:0671532/IV (b)/3> with a dialkyl acetal of 1 : 2-oxidopropanol (e.g. by heating, preferably in the presence of a catalytic proportion of pyridine or other tertiary amine), or, in some cases, by reacting an arylsulphonyl halide with an alkyl ester of p-aminobenzoic acid, p-aminobenzoylglutamic acid or a p-aminobenzoylglutamylglutamic acid having up to 7 glutamic acid residues in the molecule, and in either case, if desired, hydrolysing the ester group or groups (which step may also be effected after the oxidation).  The preparation of the starting materials of the examples above is described in detail, and lists of additional starting materials and intermediates are given.
Patent GB-952834-A (GB)
Title: Preparation of methyl methacrylate
Inventor: MCDANIEL EDGAR LAMAR
IPC: C07C69/54
Filed: 1960-03-30
Abstract: Methyl methacrylate is prepared by a catalytic dehydrogenation of methyl isobutyrate wherein a catalyst is prepared by treating solids consisting of activated alumina and a minor proportion by weight of a vanadium oxide incorporated with the alumina, at a temperature of at least 400 DEG C. with a quantity of gaseous methyl isobutyrate sufficient to convert the solids to form such that when more methyl isobutyrate is contacted therewith at a temperature of at least 400 DEG C. methyl methacrylate is formed, and then contacting gaseous methyl isobutyrate with the catalyst so prepared, at a temperature of at least 400 DEG C. e.g. 400-800 DEG C. Gamma, chi, eta, kappa or theta alumina or alpha-alumina monohydrate or mixtures of these may be used. The vanadium oxide may be the di, tri, tetra or pentoxide, used in amounts from 0.1 to 30% by weight of the combined catalyst. The vanadium may be initially incorporated in the alumina as peroxyvanadic acid or other compound e.g. the acetate or nitrate, which is converted into the oxide on calcination or during the dehydrogenation process.  The dehydrogenation is preferably effected by feeding the methyl isobutyrate vapour over the catalyst at a partial pressure below atmospheric by use of either reduced pressure or a diluent gas e.g. N2, argon, helium, CO2 or steam with a liquid hourly velocity of 0.05-10 and a contact time of 0.05-10 secs. The catalyst may be used in a fixed or fluidised bed and may be regenerated by burning at 500-625 DEG C. Examples are given.
Patent GB-854121-A (GB)
Title: Reflector cooling
IPC: G21C1/12
Filed: 1945-11-19
Abstract: 854,121. Nuclear reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 19, 1945 [Nov. 30, 1944], No. 31108/45. Drawings to Specification. Class 39(4). In a nuclear reactor, blocks of uranium or uranium oxide are embedded in cavities drilled in the blocks of a graphite moderator, shielded by concrete. A graphite reflector shield, between the reactor core and concrete, is cooled by water or dipheryl flowing through copper tubing. The reflector and core are enclosed in a hermetically sealed aluminium case through which helium gas is circulated to facilitate the heat conduction from the core to the cooling tubes. Apertures are provided in the reactor to contain cadmium control and safty rods, an ionisation chamber to mould the neutron flux, and to provide a path for a beam of X-rays and neutrons from the reactor interior for experimental purposes. A well in the upper surface of the concrete shield is used to investigate the properties of materials when subjected to neutron bombardment. Specification 847,902 is referred to.
Patent GB-441100-A (GB)
Title: Improvements in thermostatically controlled electric switches
IPC: H01H37/68
Filed: 1934-10-30
Abstract: 441,100. Thermal switches. SAUNDERS, N. F. T., Rowardennan, St. Martin's Approach, Ruislip, Middlesex. Oct. 30, 1934, No. 31132. [Class 38 (v)] A thermal switch comprises a spring strip 11 connected to a current lead 12 and carrying a contact 13 which is moved by a bimetallic strip 8 into and out of engagement with a contact 5 on a strip 3 connected to a current lead 4. The switch is held by spring members 18 inside an evacuated or gas charged glass container 1 and heat is conducted to the bimetallic strip 8 by a strip 7 which passes through the container and is held in thermal contact with an element whose temperature is to be controlled, for example the sole plate of an electric iron. In a modification (not shown), the operating temperature can be varied by means of a screw-operated push rod carried by a metal bellows sealed into the envelope 1 and operating on the strip 3.
Patent GB-174756-A (GB)
Title: Route or distance recorder, for bicycles and motor vehicles
IPC: G01C22/00
Filed: 1920-11-04
Abstract: 174,756. ConsidÞre, E. A., and Elston, A. Nov. 4, 1920. Odometers.-A distance recorder, adapted for example to be mounted on the handle-bar of a bicycle and to be driven by rotary shafting from a wheel, is provided with pointers 25, 16, 8 indicating tens of miles, miles, and yards, and is mounted side by side with a holder for route-indicating maps of the kind described in Specification 149,839, [Class 146 (ii), Stationery &c.]. The yards hand 8 is mounted directly on the arbor 6, which is connected by pinion gearing to the miles hand 16 and by further gearing of the Geneva stop type to a wheel 18 to which the arbor 20 bearing the tens-of-miles hand 25 is frictionally clutched by the spring 21. The hand 25 can be adjusted by turning the knob 26 and the hands 8, 16, by turning the knob 27, the arbor 6 being connected to a driving shaft 32 by a frictional grip 29. Universal joints 31 are provided at the ends of the shaft 32, which is driven through piniongearing or worm-gearing from a star-wheel 45 actuated by a striker on one of the wheel spokes. The gear-box 35 is attached by a nut 39 to a bracket 37 which is mounted on the hub and is slotted to permit of lateral adjustment. The indicator shown in Fig. 6 is provided with a strip road-map showing the same road in reverse directions on each side of a scale 60, the divisions of which correspond with the divisions of the dial 7.
Patent GB-900215-A (GB)
Title: Improvements in or relating to cabinets, bookcases, bookshelf bays, cubicles and the like
Inventor: BLAKE VERNON CARLOS JACK
IPC: A47B47/02
Filed: 1958-09-30
Abstract: 900,215. Cabinets &c. BLAKDALE PRODUCTS Ltd. Sept. 29, 1959 [Sept. 30, 1958], No. 31279/58. Class 52 (1). A metal book-shelf bay, bookcase, cabinet &c. comprising side panels 3, 6 connected to a back panel 8 by U-section flanges 9, 10 is provided with means for connecting it to an adjacent book-shelf bay &c. Each side panel 3, 6 is provided with an L-section flange, all three edges forming a lip 1 and with downturned tongues 2 near the bottom or upturned tongues near the top to co-operate with a lip on an adjacent side panel. The back panel 8 is provided with strips 11 forming a U-section channel 12.
Patent GB-773061-A (GB)
Title: Improvements in or relating to sparking plug cleaning apparatus
IPC: B24C3/34
Filed: 1955-11-02
Abstract: 773,061. Abrasive blasting. BOSCH GES., R. Nov. 2, 1955 [Nov. 23, 1954], No. 31289/55. Class 60  Apparatus for cleaning sparking plugs comprises a nozzle 4 for directing a jet of abrasive particles, such as sand, towards plug-receiving circular opening 5 in a rubber plate 2 clamped to the casing 1 by a securing ring 3; the opening is normally closed by two over-lapping rubber flaps 6, 7 each of which is vulcanized at its outer end to the inside of the rubber plate 2. When the sparking plug is inserted into the opening 5 it presses aside the free ends of the flaps 6. 7.
Patent GB-767656-A (GB)
Title: Improvements in or relating to axial-flow fluid machines such as turbines and compressors
Inventor: KEENAN JOHN GREGORY
IPC: F01D11/08
Filed: 1953-11-12
Abstract: 767,656. Axial-flow turbines and compressors. ROLLS-ROYCE. Ltd. Oct. 22, 1954 [Nov. 12,1953], No. 31442/53. Class 110 (3). In an axial-flow turbine or compressor for example of a gas turbine engine, in which the rotor blades have at their radially outer ends. blade tip shrouds, upstanding circumferential ribs are provided on the outer surfaces of the shrouds, each rib having a radially-extending surface thereon. The adjacent stator structure is formed with radially.inwardly-facing circumferentially-extending grooves, each groove receiving one of the ribs and having a side wall affording a radially-extending surface which is spaced from the radially-extending surface of the associated rib to provide an axial gassealing clearance therebetween. Adjacent stator structure has radial clearances from the rotor blades greater than the said axial gas-sealing clearance. The rotor blades 11a have a shroud ring 12a, the shroud being formed with two circumferential ribs 46 which have radiallyextending surfaces 47. A stator element 17 secured to the casing section 14 is formed with grooves 48 which provide radially-extending surfaces 49 which co-operate with the surfaces 47 on the ribs to provide axial gas-sealing clearances. The upstream edge of the shroud 12a is also formed with a radially-extending surface 50 which co-operates with the surface 51 on the nozzle guide vane platform 19a to provide a third axial gas-sealing clearance. The nozzle guide vane platforms such as 19a have axially- and radially-extending surfaces by which they are located in the casing structure which comprises sections 13, 14, 15, 16. The radially-inwardly-facing surfaces of the shrouds of the row of rotor blades affords with the adjacent stator structure a substantially continuous bounding surface for the working fluid.
Patent GB-687358-A (GB)
Title: Fluid pressure control valve
Inventor: TREVASKIS HENRY WILLIAM
IPC: B60T13/14
Filed: 1949-12-08
Abstract: 687,358. Valves. DUNLOP RUBBER CO., Ltd. and TREVASKIS, H. W. Nov. 23, 1950 [Dec. 8, 1949], No. 31494/49. Class 135. A fluid pressure control valve unit comprises an inlet valve 15 with an operating chamber 3 connected by a passage 4 to an exhaust chamber 2, a cradle 13 slidable in the chamber 3 and associated with the inlet valve, a compression spring 21 urging the cradle to close the inlet valve, an exhaust valve seat 25a having a tubular portion 25 slidable in the passage 4 and seating on the end of the cradle, an exhaust valve 27 resting on the seat 25a and associated with a plunger 28 slidably projecting to the exterior of the housing whereby a load on the plunger in one direction closes the exhaust valve and compresses the spring to allow the inlet pressure to open the valve 15 until the pressure in the operating chamber, acting on the exhaust valve, overcomes the load to close the inlet valve. The load is applied manually through a lever 32 or a system of levers by a cable acting through a system of springs or by a hydraulic piston and cylinder. A valve may be formed incorporating one, two or four units which may be operated one or a pair at a time. Specification 631,880, [Group XXXIV], is referred to.
Patent GB-485377-A (GB)
Title: Improvements in the manufacture and production of aminoketones
Filed: 1936-11-18
Abstract: Aminoketones are manufactured by reacting vinyl ketones or b -halogenethyl ketones with aliphatic primary or secondary amines containing at least six carbon atoms, e.g. hexylamine, heptylamine, octylamine, decylamine, dodecylamine, octodecylamine, oleylamine, N-methyldodecylamine or didodecylamine, or mixtures of amines. Suitable vinyl ketones are vinyl alkyl ketones, e.g. vinyl methyl or ethyl ketone, vinyl aralkyl ketones, e.g. vinyl benzyl ketone, or aromatic vinyl ketones, e.g. vinyl phenyl ketone, whilst b -chlorethyl methyl ketone is specified as a b -halogenethyl ketone. The reaction may be carried out in the cold or may be accelerated by the use of elevated temperatures, e.g. 40-100 DEG  C., and, if desired, superatmospheric pressure.  In some cases it is preferable to work in the presence of a solvent, and, when employing b -halogenethyl ketones, in the presence of acid-binding agents, e.g. pyridine or dimethylaniline.  The products are intermediates for dyestuffs and pharmaceutical and textile assistants.  They may be employed as textile assistants in the form of their salts or after reduction to the corresponding alcohols and esterification of these with sulphuric acid or etherification with alkylene oxides.  In examples: (1) vinyl methyl ketone is stirred with dodecylamine, yielding \su-ketobutyldodecylamine, or with oleylamine; (2) vinyl methyl ketone is heated with isohexylamine or isoheptylamine in the presence of alcohol; (3) vinyl methyl ketone is reacted as in (2) with octodecylamine to produce N-\su-ketobutyloctodecylamine. Reference is also made to the production of N-di-(\su-ketobutyl)-dodecylamine from dodecylamine and two molecular proportions of vinyl methyl ketone.
Patent GB-632470-A (GB)
Title: Improvements in or relating to equipment for greyhound racing tracks
IPC: A63K3/02
Filed: 1947-11-28
Abstract: 632,470. Equipment for greyhound racing tracks. RAYNER, W. J., and FARLAM, A. Nov. 28,1947, No, 31587. [Class 132 (i)] [Also in Group XXXVII] Electrically operated trap mechanism for a greyhound racing track comprises mechanism in the circuit of which a switch is held open by a detent which is releasable automatically by the co-operation of the hare carriage with an arm disposed suitably alongside the track of the carriage, the switch also being controlled by the action of an armature of an electromagnet in a second circuit so that the co-operation of the hare carriage with the arm cannot actuate the switch in the circuit of the trap mechanism until the armature has been moved. Figures 1-3 show a circuit of an electrically operated trap release mechanism : on closing the main switch k, the armature f of the electromagnet e is lifted so that the leaf spring on the armature exerts no pressure on the tiltable mercury switch b which tends to turn to its open position in which it is also held by the detent d, as shown in Fig. 1. Each time the hare carriage passes round the track it co-operates with the detent d and disengages it from the switch b, so that when the switch k is opened and the armature bears, through its spring j, on to the switch b, Fig. 2, the switch is tilted to its closed position when the detent d is next disengaged by the action of the hare carriage, Fig. 3, thus completing the circuit of the electromagnet a of the trap release mechanism. Prior to the opening of the main control switch k one of the subsidiary switches m, which are connected in parallel, may be closed to prevent the start of the race. In a modification (Figs. 4 and 5, not shown), the mercury switch tends to turn to its closed position and the circuit of the trap release mechanism is completed when the main control switch is closed ; in this arrangement the subsidiary switches are connected in series so that if one switch is opened before-the main switch is closed the start of the race may be prevented.
Patent GB-857120-A (GB)
Title: Treatment of leather
Inventor: COLE GRAHAME HENRY THOMAS
IPC: C14C9/00
Filed: 1958-10-03
Abstract: 857,120. Impregnating leather. IMPERIAL CHEMICAL INDUSTRIES Ltd. Aug. 31, 1959 [Oct. 3, 1958], No. 31608/58. Class 76. Leather is treated by first impregnating it with castor oil, or castor oil admixed with up to 50% of another oil and subsequently applying an organic compound containing two or more isocyanate groups, the quantity of the treating agents being such that the dry weight of the leather is increased by from 1-100% Additional oils specified are cod oil, sperm oil, or degras. The oil may be applied by dipping, soaking, drumming, brushing, padding or spraying. The polyisocyanates may be 2: 4-tolylene diisocyanate, hexamethylene diisocyanate, diisocyanato diphenylmethane, 4 : 4<SP>1</SP>: 4<SP>11</SP>-triisocyanate triphenylmethane, and the reaction products of isocyanates with phenols and polyhydroxy compounds; and these compounds may be used as a solution in a solvent such as toluene, xylene or methyl ethyl ketone. Curing may be effected at 40‹ to 140‹ C. for periods up to 8 hours. The product is resistant to water and oil; and is suitable for soling shoes, for transmission belting, for oil seal washers and for clothing leather.
Patent GB-406091-A (GB)
Title: Improvements in and relating to watertight and like doors
IPC: B63B19/00
Filed: 1932-11-09
Abstract: 406,091. Bulkhead doors. JOHNS, SIR A. W., and ALTON, S. L., Department of Naval Construction, Admiralty, London. Nov. 9, 1932, No. 31628. [Class 113 (i).] In bulkhead door closing arrangements, the opening (1) in the bulkhead is surrounded by a fixed frame 2, top and bottom circular ends being connected by straight or curved sides. This fixed frame serves as a seating for a movable frame which is operated by rack gear 17, 18 and comprises similar circular ends 14, 14<a> which are connected to side members 12, 12<a> by links 13. On closure of the door projections 23 thereon pass between recesses 22 on the movable frame the rotation of which by the rack gear causes interior projections to ride over wedge surfaces 10 on the door at the same time pressing a nose on the frame into engagement with the gasket 25. The door is held in the open position by the abutments 26, 27.
Patent GB-874659-A (GB)
Title: Improvements relating to sonic and ultrasonic wave generators
Inventor: MEREDITH ROGER JOHN
IPC: B06B1/08
Filed: 1957-10-10
Abstract: 874,659. Magnetostrictive apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 7, 1958 [Oct. 10, 1957], No. 31732/57. Class 40 (4). A magnetostrictive generator of sound or of ultrasonic waves comprises a strip 1 of magnetrostrictive material clamped at the ends to the pole faces of a magnetic core 6. A diaphragm 9 is secured to the middle of the strip and the magnetic core is energized by means of an alternating current in winding 7. To bias the strip 1, the core may be permanently magnetized or the winding 7 may carry a direct current in addition to the alternating current. Specification 779,658 is referred to.
Patent GB-1448635-A (GB)
Title: Diesel engines
IPC: F02F1/14
Filed: 1974-07-17
Abstract: 1448635 Engine cooling SULZER BROS Ltd 17 July 1974 [19 July 1973] 31733/74 Heading F1B A diesel engine comprises a cylinder block 1 with a cylinder liner 3 having an exhaust port 11  formed by orifices L3 separated from each other by axial webs containing cooling passages 15 which inter-connect upper and lower annular chambers 18, 17 formed in the cylinder liner. The upper chamber 18 is divided by a ring 20, the inner circumference of which is recessed above the exhaust port to form an orifice 21 connecting the two sections of chamber 18. An outer annular chamber 22 formed in block 1 is divided into two parts by diametrically opposite partitions (23, 24), Fig. 2 (not shown) the partition (23) lying adjacent the exhaust port and having two apertures 27, 28 situated respectively above and below said port. An opening 32 connects one part of the outer chamber 22 with lower annular chamber 17. Coolant, which enters the outer chamber 22 via an inlet pipe 33 located on the side of partition (24) remote from opening 32, is constrained by the partition to pass through apertures 27, 28; subsequently it passes via opening 32 into the lower chamber 17 and thence through cooling passages 15 into the upper chamber 18 where it is constrained by ring 20 to pass through orifice 21. The coolant subsequently passes through channels 34 into the cylinder head 4 and finally leaves the engine through discharge line 36.